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playground:alpha
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playground:alpha [2010/07/30 10:52] 132.235.40.102 |
playground:alpha [2012/03/20 09:22] massey |
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| ** Duoplasmatron Instructions ** | ** Duoplasmatron Instructions ** | ||
| - | Please study the diagram. | + | **Please study the diagram below.** |
| - | {{playground:duoplasmatron.jpg|}} | + | |
| + | {{playground:duo.jpg|}} | ||
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| 5. Turn on the focus supply, it should be set for ~2 kV. | 5. Turn on the focus supply, it should be set for ~2 kV. | ||
| - | 6. Turn up the sodium heater current to 0.55 A, and the filament current up slowly, over 30 seconds, until the arc starts. | + | 6. Turn up the sodium heater current to 0.55 A. |
| - | 7. When the arc starts, 70 A for an old filament, 90 A for a new filament, observe the Arc Voltage and keep it at 150 V. | + | 7. Slowly turn up the Filament Current until the arc starts. When the arc starts, 60 A for an old filament, 70 a for a new filament, observe the Arc Voltage and keep it at 150 V. |
| 8. Carry on increasing the filament current until the arc current reaches 2.5 A, keep the Arc Voltage at 150 V. | 8. Carry on increasing the filament current until the arc current reaches 2.5 A, keep the Arc Voltage at 150 V. | ||
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| 10. Increase the sodium heater current by ~0.05 A and the filament current by ~10 A every twenty minutes. Make sure the pressure does not rise over 1x10<sup>-5</sup> torr, if it does, do not proceed further until it has fallen below this value. | 10. Increase the sodium heater current by ~0.05 A and the filament current by ~10 A every twenty minutes. Make sure the pressure does not rise over 1x10<sup>-5</sup> torr, if it does, do not proceed further until it has fallen below this value. | ||
| - | 11. When the arc starts, 70 A for a dirty source or old filament, 90 A for a new filament in a clean source, observe the arc voltage and keep it at 150 V. | + | 11. Slowly turn up the Filament Current until the arc starts. When the arc starts, 60 A for an old filament, 70 a for a new filament, observe the Arc Voltage and keep it at 150 V. |
| 12. Carry on increasing the filament current until the arc current reaches 2.5 A, keep the arc voltage at 150 V. | 12. Carry on increasing the filament current until the arc current reaches 2.5 A, keep the arc voltage at 150 V. | ||
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| Telephone: (740)593-0933 | Telephone: (740)593-0933 | ||
| E-Mail: MASSEY@OHIOU.EDU | E-Mail: MASSEY@OHIOU.EDU | ||
| - | Last modified on 7/30/2010 DKJ | + | Last modified on 3/16/2012 TNM |
playground/alpha.txt · Last modified: 2012/11/27 08:57 by jacobs
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